GB724709A - Method of making magnetic cores - Google Patents

Method of making magnetic cores

Info

Publication number
GB724709A
GB724709A GB7830/53A GB783053A GB724709A GB 724709 A GB724709 A GB 724709A GB 7830/53 A GB7830/53 A GB 7830/53A GB 783053 A GB783053 A GB 783053A GB 724709 A GB724709 A GB 724709A
Authority
GB
United Kingdom
Prior art keywords
air
sintering
march
nitrogen
thereafter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB7830/53A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB724709A publication Critical patent/GB724709A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
    • C04B35/265—Compositions containing one or more ferrites of the group comprising manganese or zinc and one or more ferrites of the group comprising nickel, copper or cobalt

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Soft Magnetic Materials (AREA)
  • Magnetic Ceramics (AREA)

Abstract

724,709. Magnetic structures. STANDARD TELEPHONES & CABLES, Ltd. March 20, 1953 [March 26, 1952], No. 7830/53. Class 38 (2). The hysteresis losses of ferrite cores are kept down at the expense of a somewhat lower permeability by sintering for relatively short periods. Nickel zinc ferrite was made by mixing the oxides wet in a ball mill, drying, pressing into toroidal cores and sintering for 10 minutes at 1300‹ C. in air, cooling to 800‹ C. in the oven, and thereafter in air. A similar core made of manganese zinc ferrite was annealed in nitrogen for 40 minutes at 1250‹ C. and cooled in nitrogen to 800‹ C. and thereafter in air. A small amount of rutile may be added.
GB7830/53A 1952-03-26 1953-03-20 Method of making magnetic cores Expired GB724709A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE724709X 1952-03-26

Publications (1)

Publication Number Publication Date
GB724709A true GB724709A (en) 1955-02-23

Family

ID=6634656

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7830/53A Expired GB724709A (en) 1952-03-26 1953-03-20 Method of making magnetic cores

Country Status (1)

Country Link
GB (1) GB724709A (en)

Similar Documents

Publication Publication Date Title
GB820959A (en) Improvements in or relating to ferromagnetic materials of the ferrite type and methods of manufacturing same
GB718204A (en) Ferromagnetic ferrite materials
GB679349A (en) Improvements in and relating to magnetically soft mixed ferrite materials
GB823971A (en) Improvements in or relating to ferromagnetic ferrite materials
ES219075A1 (en) Method of producing magnet cores having an approximately rectangular shape of the hysteresis loop
GB900687A (en) Method of manufacturing of ferromagnetic ferrite bodies
GB724709A (en) Method of making magnetic cores
US2961407A (en) Mixed ferrite composition
GB954775A (en) Improvements in methods of manufacturing sintered ferrite bodies
GB759245A (en) Improvements in or relating to methods of manufacturing non-metallic magnetic cores having a substantially rectangular hysteresis loop
GB780975A (en) Manufacture of metal oxides and of ferrites
GB994240A (en) Improvements in or relating to methods of manufacturing magnetic cores and magnetic cores manufactured by such methods
GB764118A (en) Improvements in or relating to methods of manufacturing non-metallic magnetic cores having a substantially rectangular hysteresis loop
GB842005A (en) Improvements in or relating to ferromagnetic materials
GB803625A (en) Improvements in or relating to magnetisable cores made of sintered oxides and methods of manufacturing such cores
GB759248A (en) Improvements in or relating to methods of manufacturing non-metallic magnetic cores having a substantially rectangular hysteresis loop
GB756374A (en) A method for the manufacture of ferrite cores
GB752156A (en) Improvements in or relating to oxide magnets
GB834230A (en) Improvements in or relating to magnetically soft ferrites having rectangular hysteresis loops
GB802613A (en) Method of manufacture of manganese zinc ferrites
GB906059A (en) Magnetic cores
GB875600A (en) Improvements relating to magnetic cores for use as memory elements
GB669571A (en) Improvements in or relating to magnet cores for electromagnetic devices
GB677418A (en) Ceramic ferromagnetic body with high maximum permeability
GB959643A (en)